/* ============================================================
   Vending Machine API — Connectivity Platform
   Aesthetic: industrial machine-console. Near-black ink,
   warm amber "vend" glow, mint "dispense" signal.
   Display: Bricolage Grotesque · Body: IBM Plex Sans · Code: IBM Plex Mono
   ============================================================ */

:root {
  --ink:        #0b0c0f;
  --ink-2:      #0f1116;
  --surface:    #14161d;
  --surface-2:  #181b23;
  --line:       rgba(255, 255, 255, 0.09);
  --line-soft:  rgba(255, 255, 255, 0.055);
  --text:       #eef0f3;
  --text-2:     #aeb4c0;
  --text-3:     #767d8c;

  --amber:      #ffb627;   /* primary — the vend glow */
  --amber-deep: #f59e0b;
  --mint:       #4fe3b0;   /* dispense / success signal */
  --mint-deep:  #1fb98a;

  --radius:     16px;
  --radius-sm:  10px;
  --maxw:       1140px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Bricolage Grotesque", "IBM Plex Sans", sans-serif;
  --font-body: "IBM Plex Sans", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--ink);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Atmospheric base: faint engineered grid + grain */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(1200px 600px at 78% -10%, rgba(255, 182, 39, 0.08), transparent 60%),
    radial-gradient(900px 500px at 8% 0%, rgba(79, 227, 176, 0.05), transparent 55%),
    var(--ink);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 85%);
          mask-image: radial-gradient(120% 90% at 50% 0%, #000 35%, transparent 85%);
}

a { color: inherit; }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--amber); color: #1a1304; padding: 10px 16px;
  border-radius: 0 0 10px 0; font-weight: 600;
}
.skip-link:focus { left: 0; }

/* ----------------------------------------------------------------
   Typography primitives
   ---------------------------------------------------------------- */
.eyebrow,
.kicker {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-3);
}
.kicker {
  display: inline-block;
  color: var(--amber);
  margin-bottom: 18px;
  padding: 5px 12px;
  border: 1px solid rgba(255, 182, 39, 0.28);
  border-radius: 999px;
  background: rgba(255, 182, 39, 0.06);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--text-2);
  margin: 0 0 22px;
}
.eyebrow__dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 4px rgba(79, 227, 176, 0.16);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(79, 227, 176, 0.16); }
  50%      { box-shadow: 0 0 0 7px rgba(79, 227, 176, 0.05); }
}

/* ----------------------------------------------------------------
   Buttons
   ---------------------------------------------------------------- */
.btn {
  --bg: transparent;
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.98rem;
  padding: 13px 22px;
  border-radius: 999px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--line);
  transition: transform 0.22s var(--ease), box-shadow 0.22s var(--ease),
    background 0.22s var(--ease), border-color 0.22s var(--ease);
}
.btn--primary {
  background: var(--amber);
  color: #1a1304;
  border-color: var(--amber);
  box-shadow: 0 8px 28px -12px rgba(255, 182, 39, 0.7);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 38px -12px rgba(255, 182, 39, 0.85);
}
.btn--ghost {
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: rgba(255, 255, 255, 0.28);
  background: rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}
.btn--block { width: 100%; justify-content: center; }
.btn:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; }

/* ----------------------------------------------------------------
   Navigation
   ---------------------------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), backdrop-filter 0.3s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(11, 12, 15, 0.72);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border-bottom-color: var(--line);
}
.nav__inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 16px 28px;
  display: flex; align-items: center; gap: 28px;
}
.nav__brand {
  display: inline-flex; align-items: center; gap: 11px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  text-decoration: none;
  letter-spacing: -0.01em;
}
.nav__mark {
  width: 22px; height: 22px; border-radius: 6px; flex: none;
  background:
    linear-gradient(var(--ink) 0 0) padding-box,
    linear-gradient(135deg, var(--amber), var(--mint)) border-box;
  border: 2px solid transparent;
  position: relative;
}
.nav__mark::after {
  content: ""; position: absolute; inset: 3px;
  border-radius: 2px;
  background:
    linear-gradient(90deg, var(--amber) 50%, transparent 0) 0 0 / 50% 50%,
    linear-gradient(90deg, transparent 50%, var(--mint) 0) 0 100% / 50% 50%;
  background-repeat: no-repeat;
  opacity: 0.85;
}
.nav__links {
  display: flex; gap: 26px;
  margin-left: auto;
  font-size: 0.94rem;
}
.nav__links a {
  text-decoration: none; color: var(--text-2);
  position: relative; padding: 4px 0;
  transition: color 0.2s var(--ease);
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: var(--amber);
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.25s var(--ease);
}
.nav__links a:hover { color: var(--text); }
.nav__links a:hover::after { transform: scaleX(1); }
.nav__cta {
  text-decoration: none; color: #1a1304; background: var(--amber);
  font-weight: 600; font-size: 0.92rem;
  padding: 9px 18px; border-radius: 999px;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.nav__cta:hover { transform: translateY(-1px); box-shadow: 0 8px 22px -10px rgba(255, 182, 39, 0.8); }

/* ----------------------------------------------------------------
   Hero
   ---------------------------------------------------------------- */
.hero { position: relative; padding: 92px 0 86px; overflow: hidden; }
.hero__grid, .hero__glow { position: absolute; inset: 0; pointer-events: none; }
.hero__glow {
  background: radial-gradient(640px 440px at 82% 30%, rgba(255, 182, 39, 0.14), transparent 70%);
}
.hero__inner {
  position: relative;
  max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
  display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: 56px; align-items: center;
}
.hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.7rem, 6vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0 0 22px;
  text-wrap: balance;
}
.hero__title { background: linear-gradient(180deg, #fff 30%, #cfd3dd); -webkit-background-clip: text; background-clip: text; color: transparent; }
.hero__lede {
  font-size: 1.18rem; color: var(--text-2);
  max-width: 36ch; margin: 0 0 32px;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero__meta {
  list-style: none; margin: 0; padding: 26px 0 0;
  border-top: 1px solid var(--line);
  display: flex; gap: 38px; flex-wrap: wrap;
  font-size: 0.92rem; color: var(--text-3);
  font-family: var(--font-mono);
}
.hero__meta strong { color: var(--text); font-weight: 600; }

/* entrance stagger */
.hero__copy > * { opacity: 0; transform: translateY(16px); animation: rise 0.8s var(--ease) forwards; }
.hero__copy > .eyebrow      { animation-delay: 0.05s; }
.hero__copy > .hero__title  { animation-delay: 0.14s; }
.hero__copy > .hero__lede   { animation-delay: 0.24s; }
.hero__copy > .hero__actions{ animation-delay: 0.34s; }
.hero__copy > .hero__meta   { animation-delay: 0.44s; }
@keyframes rise { to { opacity: 1; transform: none; } }

/* Terminal visual */
.terminal {
  background: linear-gradient(180deg, var(--surface), var(--ink-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.8), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  overflow: hidden;
  opacity: 0; transform: translateY(22px) scale(0.985);
  animation: rise 0.9s var(--ease) 0.3s forwards;
}
.terminal__bar {
  display: flex; align-items: center; gap: 8px;
  padding: 13px 16px;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--line);
}
.terminal__dot { width: 11px; height: 11px; border-radius: 50%; background: #2c303b; }
.terminal__dot:nth-child(1) { background: #ff5f57; }
.terminal__dot:nth-child(2) { background: var(--amber); }
.terminal__dot:nth-child(3) { background: var(--mint); }
.terminal__name {
  margin-left: 8px; font-family: var(--font-mono);
  font-size: 0.8rem; color: var(--text-3);
}
.terminal__body {
  padding: 18px 18px 22px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  display: flex; flex-direction: column; gap: 3px;
}
.tline {
  display: flex; gap: 14px; align-items: baseline;
  padding: 4px 8px; border-radius: 7px;
  opacity: 0; transform: translateX(-6px);
  animation: tin 0.5s var(--ease) forwards;
  animation-delay: calc(0.7s + var(--i) * 0.16s);
}
@keyframes tin { to { opacity: 1; transform: none; } }
.tline__gutter { color: var(--text-3); opacity: 0.6; user-select: none; }
.tline__text { color: var(--text-2); white-space: pre; }
.tline--req  .tline__text { color: #cdd3df; }
.tline--ok   { background: rgba(79, 227, 176, 0.06); }
.tline--ok   .tline__text { color: var(--mint); }
.tline--evt  .tline__text { color: var(--amber); }
.tline--vend { background: rgba(255, 182, 39, 0.08); }
.tline--vend .tline__text { color: var(--amber); position: relative; }
.tline--vend .tline__text::after {
  content: "▌"; margin-left: 2px; animation: blink 1s steps(2) infinite;
}
@keyframes blink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }

/* ----------------------------------------------------------------
   Section scaffolding
   ---------------------------------------------------------------- */
.section { padding: 88px 0; position: relative; }
.section + .section { border-top: 1px solid var(--line-soft); }
.section__head { max-width: 62ch; margin-bottom: 52px; }
.section__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 3.6vw, 2.85rem);
  line-height: 1.08;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  text-wrap: balance;
}
.section__lead { font-size: 1.1rem; color: var(--text-2); margin: 0; max-width: 56ch; }

/* reveal — only hidden when JS is present to animate them in */
.js [data-reveal] { opacity: 0; transform: translateY(26px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.js [data-reveal].is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal], .hero__copy > *, .terminal, .tline { opacity: 1 !important; transform: none !important; animation: none !important; }
}

/* ----------------------------------------------------------------
   Intro / "removes" cards
   ---------------------------------------------------------------- */
.removes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.remove-card {
  background: linear-gradient(180deg, var(--surface), var(--ink-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.remove-card:hover { transform: translateY(-4px); border-color: rgba(255, 95, 87, 0.4); }
.remove-card__x {
  display: inline-grid; place-items: center;
  width: 34px; height: 34px; border-radius: 9px;
  background: rgba(255, 95, 87, 0.12); color: #ff8a82;
  font-size: 0.85rem; margin-bottom: 16px;
}
.remove-card h3 { font-family: var(--font-display); font-weight: 600; font-size: 1.18rem; margin: 0 0 8px; }
.remove-card p { margin: 0; color: var(--text-2); font-size: 0.96rem; }
.intro__closer {
  margin: 38px 0 0; padding-left: 22px;
  border-left: 2px solid var(--amber);
  font-size: 1.18rem; color: var(--text); max-width: 64ch;
  font-family: var(--font-display); font-weight: 500; line-height: 1.5;
}

/* ----------------------------------------------------------------
   Use cases
   ---------------------------------------------------------------- */
.cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.case {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px 26px;
  overflow: hidden;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.case::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--amber), var(--mint));
  transition: width 0.4s var(--ease);
}
.case:hover { transform: translateY(-5px); border-color: rgba(255, 182, 39, 0.35); background: var(--surface-2); }
.case:hover::before { width: 100%; }
.case__tag {
  font-family: var(--font-mono); font-size: 0.8rem; font-weight: 600;
  color: var(--amber); letter-spacing: 0.05em;
}
.case__title { font-family: var(--font-display); font-weight: 600; font-size: 1.32rem; margin: 14px 0 10px; letter-spacing: -0.01em; }
.case__detail { margin: 0; color: var(--text-2); font-size: 0.98rem; }

/* ----------------------------------------------------------------
   Billing models
   ---------------------------------------------------------------- */
.models { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.model {
  background: linear-gradient(180deg, var(--surface), var(--ink-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 30px;
}
.model__head { padding-bottom: 22px; margin-bottom: 24px; border-bottom: 1px solid var(--line); }
.model__name {
  font-family: var(--font-display); font-weight: 700; font-size: 1.5rem;
  margin: 0 0 8px; letter-spacing: -0.02em;
}
.model__summary { margin: 0; color: var(--text-2); font-size: 0.98rem; }
.model__steps {
  list-style: none; counter-reset: m; margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 16px;
}
.model__steps li {
  counter-increment: m;
  position: relative; padding-left: 44px;
  color: var(--text-2); font-size: 0.97rem;
}
.model__steps li::before {
  content: counter(m, decimal-leading-zero);
  position: absolute; left: 0; top: -1px;
  width: 30px; height: 30px; border-radius: 8px;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 0.74rem; font-weight: 600;
  color: var(--mint);
  background: rgba(79, 227, 176, 0.08);
  border: 1px solid rgba(79, 227, 176, 0.22);
}

/* ----------------------------------------------------------------
   Transaction flow timeline
   ---------------------------------------------------------------- */
.flow { list-style: none; margin: 0; padding: 0; max-width: 760px; }
.flow__step {
  position: relative;
  display: grid; grid-template-columns: 64px 1fr; gap: 24px;
  padding-bottom: 30px;
}
.flow__step::after {
  content: ""; position: absolute; left: 31px; top: 56px; bottom: -4px;
  width: 2px; background: linear-gradient(var(--line), transparent);
}
.flow__step:last-child { padding-bottom: 0; }
.flow__step:last-child::after { display: none; }
.flow__num {
  width: 64px; height: 64px; border-radius: 14px;
  display: grid; place-items: center;
  font-family: var(--font-mono); font-weight: 600; font-size: 1.05rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}
.flow__body { padding-top: 6px; }
.flow__actor {
  display: inline-block;
  font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.12em;
  text-transform: uppercase; padding: 3px 9px; border-radius: 999px;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  color: var(--text-3);
}
.flow__actor--you, .flow__actor--platform { color: var(--amber); border-color: rgba(255, 182, 39, 0.3); background: rgba(255, 182, 39, 0.06); }
.flow__actor--machine, .flow__actor--customer { color: var(--mint); border-color: rgba(79, 227, 176, 0.3); background: rgba(79, 227, 176, 0.06); }
.flow__text { margin: 0 0 12px; font-size: 1.06rem; color: var(--text); }
.flow__endpoint {
  display: inline-block;
  font-family: var(--font-mono); font-size: 0.85rem;
  padding: 7px 13px; border-radius: 8px;
  background: var(--ink-2); border: 1px solid var(--line);
  color: var(--mint);
}

/* ----------------------------------------------------------------
   API specs
   ---------------------------------------------------------------- */
.specs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.spec {
  position: relative;
  background: linear-gradient(180deg, var(--surface), var(--ink-2));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 30px;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.spec:hover { transform: translateY(-4px); border-color: rgba(255, 182, 39, 0.35); }
.spec__role {
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--mint);
}
.spec__name { font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; margin: 12px 0 12px; letter-spacing: -0.02em; }
.spec__detail { margin: 0 0 26px; color: var(--text-2); }
.spec__links { display: flex; align-items: center; gap: 22px; }
.spec__link {
  text-decoration: none; font-weight: 600; font-size: 0.95rem; color: var(--text-2);
  transition: color 0.2s var(--ease);
}
.spec__link:hover { color: var(--text); }
.spec__link--primary { color: var(--amber); }
.spec__link--primary:hover { color: var(--amber-deep); }

/* ----------------------------------------------------------------
   Contact
   ---------------------------------------------------------------- */
.section--contact { padding-bottom: 96px; }
.contact {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start;
  background:
    radial-gradient(700px 400px at 12% 0%, rgba(255, 182, 39, 0.1), transparent 60%),
    linear-gradient(180deg, var(--surface), var(--ink-2));
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 52px 48px;
}
.contact__copy { padding-top: 6px; }
.contact__form { display: flex; flex-direction: column; gap: 16px; }
.field { display: flex; flex-direction: column; gap: 7px; }
.field label { font-size: 0.84rem; font-weight: 600; color: var(--text-2); }
.field input, .field textarea {
  font-family: var(--font-body); font-size: 0.98rem; color: var(--text);
  background: var(--ink); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 12px 14px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  resize: vertical;
}
.field input::placeholder, .field textarea::placeholder { color: var(--text-3); }
.field input:focus, .field textarea:focus {
  outline: none; border-color: var(--amber);
  box-shadow: 0 0 0 3px rgba(255, 182, 39, 0.15);
}
.contact__form .cf-turnstile { margin: 2px 0; min-height: 65px; }
.contact__status { margin: 4px 0 0; font-size: 0.92rem; min-height: 1.2em; }
.contact__status.is-ok { color: var(--mint); }
.contact__status.is-err { color: #ff8a82; }

/* ----------------------------------------------------------------
   Footer
   ---------------------------------------------------------------- */
.footer { border-top: 1px solid var(--line); padding: 44px 0; }
.footer__inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 28px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 26px;
}
.footer__brand { display: inline-flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; }
.footer__line { margin: 0; color: var(--text-2); font-size: 0.92rem; }
.footer__line a { color: var(--amber); text-decoration: none; }
.footer__line a:hover { text-decoration: underline; }
.footer__copy { margin: 0 0 0 auto; color: var(--text-3); font-size: 0.86rem; font-family: var(--font-mono); }

/* ----------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------- */
@media (max-width: 940px) {
  .hero__inner { grid-template-columns: 1fr; gap: 44px; }
  .terminal { max-width: 560px; }
  .removes, .cases { grid-template-columns: 1fr 1fr; }
  .models, .specs { grid-template-columns: 1fr; }
  .contact { grid-template-columns: 1fr; gap: 36px; padding: 40px 32px; }
}
@media (max-width: 720px) {
  .nav__links { display: none; }
  .hero { padding: 64px 0 60px; }
  .section { padding: 64px 0; }
  .removes, .cases { grid-template-columns: 1fr; }
  .hero__meta { gap: 22px; }
  .contact { padding: 32px 22px; }
  .flow__step { grid-template-columns: 52px 1fr; gap: 18px; }
  .flow__num { width: 52px; height: 52px; }
  .flow__step::after { left: 25px; }
}

/* ============================================================
   Documentation / prose pages (e.g. Error Codes Reference)
   ============================================================ */
.wrap--narrow { max-width: 920px; }
.doc { position: relative; padding: 64px 0 96px; }
.doc__grid {
  position: absolute; inset: 0 0 auto; height: 320px; z-index: -1;
  background: radial-gradient(700px 320px at 50% -40%, rgba(255, 182, 39, 0.1), transparent 70%);
}
.doc__head { padding-bottom: 38px; margin-bottom: 44px; border-bottom: 1px solid var(--line); }
.doc__back {
  display: inline-block; margin-bottom: 26px;
  font-family: var(--font-mono); font-size: 0.82rem; letter-spacing: 0.04em;
  color: var(--text-3); text-decoration: none;
  transition: color 0.2s var(--ease);
}
.doc__back:hover { color: var(--amber); }
.doc__title {
  font-family: var(--font-display); font-weight: 800;
  font-size: clamp(2.2rem, 5vw, 3.3rem); line-height: 1.05;
  letter-spacing: -0.03em; margin: 0;
  background: linear-gradient(180deg, #fff 35%, #cfd3dd);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.doc__sub { margin: 16px 0 0; font-size: 1.12rem; color: var(--text-2); max-width: 62ch; }

/* Prose */
.prose { color: var(--text-2); font-size: 1.02rem; }
.prose > *:first-child { margin-top: 0; }
.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: var(--font-display); color: var(--text);
  letter-spacing: -0.02em; line-height: 1.2; scroll-margin-top: 90px;
}
.prose h2 {
  font-size: 1.7rem; font-weight: 700; margin: 56px 0 18px;
  padding-top: 30px; border-top: 1px solid var(--line-soft);
}
.prose h2:first-of-type { border-top: 0; padding-top: 0; }
.prose h3 { font-size: 1.28rem; font-weight: 600; margin: 36px 0 14px; }
.prose h4 { font-size: 1.08rem; font-weight: 600; margin: 28px 0 12px; color: var(--text); }
.prose p { margin: 0 0 18px; }
.prose a { color: var(--amber); text-decoration: none; border-bottom: 1px solid rgba(255, 182, 39, 0.35); }
.prose a:hover { border-bottom-color: var(--amber); }
.prose strong { color: var(--text); font-weight: 600; }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 22px; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--amber); }
.prose hr { border: 0; height: 1px; background: var(--line); margin: 44px 0; }
.prose code {
  font-family: var(--font-mono); font-size: 0.86em;
  background: var(--ink-2); border: 1px solid var(--line);
  color: var(--mint); padding: 2px 6px; border-radius: 6px;
}
.prose pre {
  background: var(--ink-2); border: 1px solid var(--line);
  border-radius: var(--radius-sm); padding: 18px 20px; overflow-x: auto;
}
.prose pre code { background: none; border: 0; padding: 0; color: var(--text); }

/* Tables — the heart of the reference doc */
.prose table {
  width: 100%; border-collapse: collapse; margin: 22px 0 30px;
  font-size: 0.92rem;
  border: 1px solid var(--line); border-radius: var(--radius-sm);
  overflow: hidden; display: table;
}
.prose thead { background: rgba(255, 182, 39, 0.07); }
.prose th {
  text-align: left; font-family: var(--font-mono); font-weight: 600;
  font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--amber); padding: 13px 16px; border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
.prose td { padding: 13px 16px; border-bottom: 1px solid var(--line-soft); color: var(--text-2); vertical-align: top; }
.prose tbody tr:last-child td { border-bottom: 0; }
.prose tbody tr { transition: background 0.15s var(--ease); }
.prose tbody tr:hover { background: rgba(255, 255, 255, 0.02); }
.prose td:first-child {
  font-family: var(--font-mono); font-weight: 600; color: var(--mint);
  white-space: nowrap;
}
.prose td code { white-space: nowrap; }

.prose .table-scroll, .prose figure.table { overflow-x: auto; }

@media (max-width: 720px) {
  .doc { padding: 40px 0 64px; }
  .prose { font-size: 0.98rem; }
  .prose table { display: block; overflow-x: auto; white-space: nowrap; }
}

/* API section — error codes reference banner */
.ref-banner {
  display: flex; align-items: center; gap: 18px;
  margin-top: 20px; padding: 22px 26px;
  text-decoration: none;
  background: linear-gradient(180deg, var(--surface), var(--ink-2));
  border: 1px solid var(--line); border-radius: var(--radius);
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease);
}
.ref-banner:hover { transform: translateY(-3px); border-color: rgba(255, 182, 39, 0.4); }
.ref-banner__icon {
  flex: none; width: 38px; height: 38px; border-radius: 10px;
  display: grid; place-items: center;
  font-family: var(--font-display); font-weight: 800; font-size: 1.15rem;
  color: var(--amber); background: rgba(255, 182, 39, 0.1);
  border: 1px solid rgba(255, 182, 39, 0.3);
}
.ref-banner__body { display: flex; flex-direction: column; gap: 3px; }
.ref-banner__body strong { font-family: var(--font-display); font-size: 1.12rem; color: var(--text); font-weight: 600; }
.ref-banner__body span { color: var(--text-2); font-size: 0.95rem; }
.ref-banner__arrow { margin-left: auto; color: var(--amber); font-size: 1.2rem; transition: transform 0.25s var(--ease); }
.ref-banner:hover .ref-banner__arrow { transform: translateX(4px); }
@media (max-width: 540px) { .ref-banner__arrow { display: none; } }